JPH0358600A - Super-directional loudspeaker - Google Patents
Super-directional loudspeakerInfo
- Publication number
- JPH0358600A JPH0358600A JP19269889A JP19269889A JPH0358600A JP H0358600 A JPH0358600 A JP H0358600A JP 19269889 A JP19269889 A JP 19269889A JP 19269889 A JP19269889 A JP 19269889A JP H0358600 A JPH0358600 A JP H0358600A
- Authority
- JP
- Japan
- Prior art keywords
- circuit board
- printed circuit
- super
- ultrasonic vibrator
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Transducers For Ultrasonic Waves (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、鳥獣類の撃退装置等の如く、特定空間へ音場
を形成する製品の音源装置に適用される超指向性スピー
カに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a superdirectional speaker applied to a sound source device of a product that forms a sound field in a specific space, such as a device for repelling birds and beasts.
起指向性スピーカが問題とされているのは、音圧レベル
が低いことであり、この音圧レベルを上げるためには、
振動子の数を増やし、且つ、直径を小さくシ、集積度を
上げることである。しかし従来の超指向性スピーカ（例
えば実開昭６０−３２８９３号公報）では、第４図に示
す如く、個々の振動子０１が丸型のため、集積に限度が
あり、全体が六角形０２の形状をしている。また、超指
向性を、より遠くまで伝播させるためには、全体を円状
に構戒するのが理想である。The problem with directional speakers is that the sound pressure level is low, and in order to increase this sound pressure level,
The goal is to increase the number of vibrators, reduce their diameter, and increase the degree of integration. However, in conventional superdirectional speakers (for example, Japanese Utility Model Application Publication No. 60-32893), as shown in FIG. It has a shape. In addition, in order to propagate the superdirectivity to a greater distance, it is ideal to arrange the entire structure in a circular shape.
また、前記従来の超指向性スピーカは、振動子０１の共
振板がアルミ製のため、外力に対して破損の恐れがあり
、メッシュ状の蓋により保護する必要がある。この蓋が
振動子の出力音波へ影響を及ぼし、超指向特性に悪い影
響を与えている。Furthermore, in the conventional superdirectional speaker, since the resonator plate of the vibrator 01 is made of aluminum, there is a risk of damage due to external force, and it is necessary to protect it with a mesh-like lid. This lid affects the output sound waves of the vibrator, and has a negative effect on the superdirectivity characteristics.
通常のスピーカとは相反した超指向特性を目的とした超
指向性スピーカは、音の広がりが約２度と鋭い指向性を
有するが、通常のスピーカとくらべ音圧レベルが低いこ
とが問題である。Super directional speakers, which aim to have super directional characteristics that are contrary to normal speakers, have sharp directivity with a sound spread of approximately 2 degrees, but the problem is that the sound pressure level is lower than that of normal speakers. .
この超指向性スピーカは、音波パラメトリック効果の原
理に基き、超音波の変調信号によりその効果を発生させ
ているため、スピーカは超音波振動子の集合体で構成さ
れている。This super-directional speaker is based on the principle of the acoustic parametric effect, and the effect is generated by an ultrasonic modulation signal, so the speaker is composed of an assembly of ultrasonic transducers.
この音圧レベルを増大させるためには、振動子の数を増
やせばよいが、同時に鋭い指向性を維持するためには、
その振動素子の配列形態を同心平面上、かつ、径を小さ
く集積することが理想とされ、性能を満足するのに困難
をきたしている。In order to increase this sound pressure level, the number of transducers can be increased, but in order to maintain sharp directivity at the same time,
The ideal arrangement of the vibrating elements is to integrate them on a concentric plane and with a small diameter, but it is difficult to achieve satisfactory performance.
本発明の課題は、上記従来の問題点を解消できる超指向
性スピーカを提供することである。An object of the present invention is to provide a superdirectional speaker that can solve the above conventional problems.
本発明による超指向性スピーカは、リード線用スルーホ
ールを設けたプリント基板と、このプリント基板上に配
置される四角形状の超音波振動子と、この超音波振動子
上に配設される共振要素とを具備してなる複数の振動子
を略円形に配置してなることを特徴とする。The superdirectional speaker according to the present invention includes a printed circuit board provided with a through hole for a lead wire, a rectangular ultrasonic transducer disposed on the printed circuit board, and a resonator disposed on the ultrasonic transducer. The present invention is characterized in that a plurality of vibrators each having a plurality of elements are arranged in a substantially circular manner.
本発明によれば、超指向性スピーカの超音波振動子集合
体として、最も理想的な配列構成をとることができ、そ
の結果、振動子数に応じた音圧レベルの向上、鋭い指向
性のある音源をつくることが可能である。According to the present invention, it is possible to have the most ideal arrangement configuration as an ultrasonic transducer assembly of a superdirectional speaker, and as a result, the sound pressure level is improved according to the number of transducers, and sharp directivity is achieved. It is possible to create a certain sound source.
第１図は、本発明の一実施例の外形図で、第１図（Ａ）
は平面図、第１図（ロ）は第１図（イ）の部分拡大図で
ある。第２図は第１図の部分断面図である。FIG. 1 is an outline drawing of an embodiment of the present invention, and FIG.
1 is a plan view, and FIG. 1(B) is a partially enlarged view of FIG. 1(A). FIG. 2 is a partial sectional view of FIG. 1.
第１図および第２図において、ｌは超音波振動子、２は
共振板、３は両面プリント基板、４はスルーホール、５
．５’はそれぞれリード線、６は裏パターン、７は表パ
ターン、８は筐体を示す。1 and 2, l is an ultrasonic transducer, 2 is a resonant plate, 3 is a double-sided printed circuit board, 4 is a through hole, and 5
．． 5' indicates a lead wire, 6 indicates a back pattern, 7 indicates a front pattern, and 8 indicates a housing.
第１図および第２図において、例えば、７朋角のプラス
チック製の共振板２を有する超音波振動子Ｉを９５２個
使用し、第１図の様に、最も集積した配列とするために
リード線５の貫通穴を約２ｎ間隔にて平面格子状に展開
し、外周を円形構成とする。In FIGS. 1 and 2, for example, 952 ultrasonic transducers I each having a 7-square plastic resonance plate 2 are used, and as shown in FIG. The through-holes of the wires 5 are arranged in a planar lattice shape at intervals of about 2n, and the outer periphery is circular.
超音波振動子Ｉの■，ｅ極の２本のリード線５，５′
を前記構或を保ち配線可能とするために、スルーホール
４付き両面プリント基板３を採用し、超音波振動子！チ
ップは両面プリント基板３表面へ接着し、１本のリード
線５は表パターン７へ、もう１本のリード線５′はスル
ーホール４を通して裏パターン６ヘハンダ付けされてい
る。Two lead wires 5 and 5' of the ■ and e poles of the ultrasonic transducer I
In order to maintain the above structure and enable wiring, a double-sided printed circuit board 3 with through holes 4 is used, and an ultrasonic vibrator! The chip is adhered to the surface of a double-sided printed circuit board 3, one lead wire 5 is soldered to the front pattern 7, and the other lead wire 5' is soldered to the back pattern 6 through the through hole 4.
超音波振動子ｌは接触しても支障はない（実験済）が、
リードａ５を両面プリント基板３の裏側へリードする隙
間が必要である構造上、約２１ｌｌ１の間隔を設けてい
る。又、超音波振動子ｌのサイズｌは共振板２の直径と
ほぼ同様とする。There is no problem when the ultrasonic transducer l comes in contact with it (tested), but
Due to the structure, which requires a gap to lead the lead a5 to the back side of the double-sided printed circuit board 3, an interval of approximately 21ll1 is provided. Further, the size l of the ultrasonic transducer l is approximately the same as the diameter of the resonance plate 2.
第３図は、本発明の一実施例の超指向性スピーカの具体
的な使用例を説明するための図である。FIG. 3 is a diagram for explaining a specific usage example of the superdirectional speaker according to one embodiment of the present invention.
第３図において、超指向性スピーカＩ２は、専用変調ア
ンプＩＯと接続され、この専用変調アンプＩＯにはカセ
ットテープ９等を利用し、音響信号等が入力される。専
用変調アンプ１０により音響信号は超音波と変調し増幅
され、接続ケーブル１１より超指向性スピーカｌ２へ変
調信号が出力される。この超指向性スピーカＩ２よりパ
ラメトリック音源が形威され指向性音場ｌ３が発生する
。In FIG. 3, the super-directional speaker I2 is connected to a dedicated modulation amplifier IO, and an audio signal or the like is inputted to the dedicated modulation amplifier IO using a cassette tape 9 or the like. The acoustic signal is modulated with ultrasonic waves and amplified by the dedicated modulation amplifier 10, and the modulated signal is output from the connection cable 11 to the superdirectional speaker l2. A parametric sound source is emitted from this super-directional speaker I2, and a directional sound field I3 is generated.
本発明によれば、超晋波振動子の共振板をプラスチック
製のものとしたため、外力に対して強度があり、従来の
保護用メツシ−’Ｈは不要である。According to the present invention, since the resonant plate of the ultra-shinpa vibrator is made of plastic, it is strong against external forces, and the conventional protective mesh-'H is not necessary.
よって超音波出力へ何の影響も及ぼさない。Therefore, there is no effect on the ultrasonic output.
また、スルーホール両面プリント基板の採用により例え
ば７朋角チップの超音波振動子を最も集積した配列とす
ることが可能となり、全体を円状に構成することができ
る。例えば、超音波振動子を９５２イ固使用した場合、
直径が３ ２ ０ ｒｎｙｈψとなった０
〔発明の効果〕
本発明によれば、超指向性スピーカ用アンプを通して音
響信号等を入力すると、スピーカよりパラメ｝ ＩＪツ
ク音源が形成され、約２度の指向性をもった音場空間を
つくることができる。よって特定区域にのみ限定して情
報を伝達することができ、例えば、人の集まる会場での
案内や説明の放送で同時に異なる情報を伝えても、互い
に影響を与えることがない。さらに、超音波振動子のサ
イズを共振板の直径とほぼ同一寸法を有する四角形とす
ると共に、前記の共振板を円形に集合させることにより
一定寸法の基板上により多数の共振板を設けることがで
き、超指向性を強めることができる。Further, by employing a through-hole double-sided printed circuit board, it is possible to arrange ultrasonic transducers of, for example, 7 square chips in the most integrated arrangement, and the whole can be configured in a circular shape. For example, when using an ultrasonic transducer of 952,
[Effect of the Invention] According to the present invention, when an acoustic signal, etc. is input through a superdirectional speaker amplifier, an IJtsuku sound source is formed from the speaker, and an approximately 2 degree It is possible to create a directional sound field space. Therefore, information can be transmitted only to a specific area, and even if different pieces of information are conveyed at the same time, for example, when broadcasting information or explanations at a venue where many people gather, they will not affect each other. Furthermore, by making the size of the ultrasonic transducer a rectangular shape with approximately the same dimensions as the diameter of the resonant plate, and by gathering the resonant plates in a circular shape, it is possible to provide a larger number of resonant plates on a substrate of a fixed size. , superdirectivity can be strengthened.
第１図は、本発明の一実施例に係る超指向性スピーカの
外形図、第２図は第１図の部分拡大断面図、第３図は本
発明の一実施例の適用例を示す全体構或図、第４図は従
来例を説明するための図である。
Ｉ・・・超音波振動子、２・・・共振板、３・・・両面
プリント基板、４・・・スルーホール、５．５′・・・
リード線。FIG. 1 is an external view of a superdirectional speaker according to an embodiment of the present invention, FIG. 2 is a partially enlarged sectional view of FIG. 1, and FIG. 3 is an overall view showing an application example of the embodiment of the present invention. The configuration diagram, FIG. 4, is a diagram for explaining a conventional example. I...Ultrasonic vibrator, 2...Resonance plate, 3...Double-sided printed circuit board, 4...Through hole, 5.5'...
Lead.
Claims (1)
プリント基板上に配設される四角形状の超音波振動子と
、この超音波振動子上に配設される共振要素とを具備し
てなる複数の振動子を略円形に配置してなることを特徴
とする超指向性スピーカ。A plurality of devices including a printed circuit board provided with a through hole for lead wires, a rectangular ultrasonic transducer disposed on the printed circuit board, and a resonant element disposed on the ultrasonic transducer. A super-directional speaker characterized by having vibrators arranged in a substantially circular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19269889A JPH0358600A (en) | 1989-07-27 | 1989-07-27 | Super-directional loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19269889A JPH0358600A (en) | 1989-07-27 | 1989-07-27 | Super-directional loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0358600A true JPH0358600A (en) | 1991-03-13 |
Family
ID=16295562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19269889A Pending JPH0358600A (en) | 1989-07-27 | 1989-07-27 | Super-directional loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0358600A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09300881A (en) * | 1996-05-08 | 1997-11-25 | Micro Kk | Extending and contracting type writing utensil |
| KR100689876B1 (en) * | 2004-12-20 | 2007-03-09 | 삼성전자주식회사 | Sound reproduction screen by ultrasonic conversion regeneration method |
| JP2013157740A (en) * | 2012-01-27 | 2013-08-15 | Taiheiyo Cement Corp | Parametric speaker and manufacturing method of the same |
| JP2013175935A (en) * | 2012-02-24 | 2013-09-05 | Taiheiyo Cement Corp | Parametric speaker and manufacturing method of the same |
| JP2016028558A (en) * | 2014-07-25 | 2016-03-03 | パイオニア株式会社 | Animal preventing device |
| JP2019176350A (en) * | 2018-03-28 | 2019-10-10 | 株式会社Ｓｏｋｅｎ | Parametric speaker |
-
1989
- 1989-07-27 JP JP19269889A patent/JPH0358600A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09300881A (en) * | 1996-05-08 | 1997-11-25 | Micro Kk | Extending and contracting type writing utensil |
| KR100689876B1 (en) * | 2004-12-20 | 2007-03-09 | 삼성전자주식회사 | Sound reproduction screen by ultrasonic conversion regeneration method |
| JP2013157740A (en) * | 2012-01-27 | 2013-08-15 | Taiheiyo Cement Corp | Parametric speaker and manufacturing method of the same |
| JP2013175935A (en) * | 2012-02-24 | 2013-09-05 | Taiheiyo Cement Corp | Parametric speaker and manufacturing method of the same |
| JP2016028558A (en) * | 2014-07-25 | 2016-03-03 | パイオニア株式会社 | Animal preventing device |
| JP2019176350A (en) * | 2018-03-28 | 2019-10-10 | 株式会社Ｓｏｋｅｎ | Parametric speaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100310349B1 (en) | Piezoelectric transducers | |
| US4204096A (en) | Sonic transducer mounting | |
| JP3180646B2 (en) | Speaker | |
| US4885773A (en) | Apparatus for mounting a unidirectional microphone in a hands-free telephone subset | |
| US4048454A (en) | Sonic transducer employing rigid radiating member | |
| JPS5895498A (en) | Acoustic converter | |
| JPS61253996A (en) | Parametric speaker | |
| CN118382045A (en) | A speaker | |
| JPH0358600A (en) | Super-directional loudspeaker | |
| EP1437587A1 (en) | Sound simulator and sound simulating method | |
| US7099488B2 (en) | Planar speaker wiring layout | |
| CN209627688U (en) | A kind of earpiece and communication device with MEMS loudspeaker array | |
| JP2004112212A (en) | Super-directivity speaker | |
| WO2022143485A1 (en) | Electronic device | |
| WO2005022950A1 (en) | Speaker device | |
| US10779087B2 (en) | Vibration diaphragm | |
| WO2024207503A1 (en) | Sound production device | |
| JPS62115996A (en) | speaker | |
| JPS60150399A (en) | Parametric array speaker | |
| JPS6134799Y2 (en) | ||
| US8180086B2 (en) | Speaker | |
| US7773765B1 (en) | Rectangular horn for varied acoustic drivers | |
| US12363483B2 (en) | Speaker | |
| JP3057597U (en) | Piezoelectric ceramic speaker | |
| CN218550096U (en) | Ultrasonic sound box |